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Loan Receivables and Allowance for Loan Losses - Delinquency Status of Loans Receivable, by Performing and Non-Performing Loans (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | $ 847 | $ 2,972
61- 89 Days Past Due | 1,188 | 826
Total Past Due | 2,035 | 3,798
Current | 406,803 | 406,085
Total Loan Balances | 408,838 | 409,884
Total Non-Accrual and > 90 Days Past Due Loans | 11,000 | 13,174
Total Performing Loans | 419,838 | 423,058
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Performing Loans | 394,595 | 394,893
Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Performing Loans | 8,410 | 9,242
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Performing Loans | 16,833 | 18,923
Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 136 | 725
61- 89 Days Past Due |  |
Total Past Due | 136 | 725
Current | 32,564 | 28,159
Total Loan Balances | 32,700 | 28,884
Total Non-Accrual and > 90 Days Past Due Loans | 6,052 | 6,177
Total Performing Loans | 38,752 | 35,061
Commercial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 120 | 725
61- 89 Days Past Due |  |
Total Past Due | 120 | 725
Current | 30,983 | 26,641
Total Loan Balances | 31,103 | 27,366
Total Non-Accrual and > 90 Days Past Due Loans |  | 25
Total Performing Loans | 31,103 | 27,391
Commercial [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 16 |
61- 89 Days Past Due |  |
Total Past Due | 16 |
Current | 143 | 167
Total Loan Balances | 159 | 167
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 159 | 167
Commercial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current | 1,438 | 1,351
Total Loan Balances | 1,438 | 1,351
Total Non-Accrual and > 90 Days Past Due Loans | 6,052 | 6,152
Total Performing Loans | 7,490 | 7,503
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 654 | 1,858
61- 89 Days Past Due | 1,188 | 266
Total Past Due | 1,842 | 2,124
Current | 213,626 | 218,436
Total Loan Balances | 215,468 | 220,560
Total Non-Accrual and > 90 Days Past Due Loans | 2,583 | 2,605
Total Performing Loans | 218,051 | 223,165
Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 654 | 1,858
61- 89 Days Past Due | 1,188 | 266
Total Past Due | 1,842 | 2,124
Current | 200,986 | 204,944
Total Loan Balances | 202,828 | 207,068
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 202,828 | 207,068
Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current | 8,251 | 9,075
Total Loan Balances | 8,251 | 9,075
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 8,251 | 9,075
Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current | 4,389 | 4,417
Total Loan Balances | 4,389 | 4,417
Total Non-Accrual and > 90 Days Past Due Loans | 2,583 | 2,605
Total Performing Loans | 6,972 | 7,022
Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current |  |
Total Loan Balances |  |
Total Non-Accrual and > 90 Days Past Due Loans | 260 | 260
Total Performing Loans | 260 | 260
Construction [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current |  |
Total Loan Balances |  |
Total Non-Accrual and > 90 Days Past Due Loans | 260 | 260
Total Performing Loans | 260 | 260
Construction to Permanent [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current | 12,650 | 10,106
Total Loan Balances | 12,650 | 10,106
Total Non-Accrual and > 90 Days Past Due Loans |  | 1,197
Total Performing Loans | 12,650 | 11,303
Construction to Permanent [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current | 12,650 | 10,106
Total Loan Balances | 12,650 | 10,106
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 12,650 | 10,106
Construction to Permanent [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current |  |
Total Loan Balances |  |
Total Non-Accrual and > 90 Days Past Due Loans |  | 1,197
Total Performing Loans |  | 1,197
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 53 | 32
61- 89 Days Past Due |  |
Total Past Due | 53 | 32
Current | 100,891 | 103,264
Total Loan Balances | 100,944 | 103,296
Total Non-Accrual and > 90 Days Past Due Loans | 2,075 | 2,902
Total Performing Loans | 103,019 | 106,198
Residential Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 53 | 32
61- 89 Days Past Due |  |
Total Past Due | 53 | 32
Current | 100,891 | 103,264
Total Loan Balances | 100,944 | 103,296
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 100,944 | 103,296
Residential Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  |
61- 89 Days Past Due |  |
Total Past Due |  |
Current |  |
Total Loan Balances |  |
Total Non-Accrual and > 90 Days Past Due Loans | 2,075 | 2,902
Total Performing Loans | 2,075 | 2,902
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 4 | 357
61- 89 Days Past Due |  | 560
Total Past Due | 4 | 917
Current | 47,072 | 46,121
Total Loan Balances | 47,076 | 47,038
Total Non-Accrual and > 90 Days Past Due Loans | 30 | 33
Total Performing Loans | 47,106 | 47,071
Consumer [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due | 4 | 350
61- 89 Days Past Due |  | 560
Total Past Due | 4 | 910
Current | 47,067 | 46,121
Total Loan Balances | 47,071 | 47,031
Total Non-Accrual and > 90 Days Past Due Loans |  |
Total Performing Loans | 47,071 | 47,031
Consumer [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
31-60 Days Past Due |  | 7
61- 89 Days Past Due |  |
Total Past Due |  | 7
Current | 5 |
Total Loan Balances | 5 | 7
Total Non-Accrual and > 90 Days Past Due Loans | 30 | 33
Total Performing Loans | $ 35 | $ 40

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- Definition Financing receivables that are less than 60 days past due but more than 29 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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- Definition Financing receivables that are less than 90 days past due but more than 59 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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